I'm from Sweden and not sure USA ever was a particular great country compared to its peers and the idea it was in some sort of golden age after ww2 seems untrue. Sure real wage growth maybe looked atleast on paper better than it do today for USA (but that perhaps don't really tell that much), but compared to other countries at the same it overall improvement in wage growth and reduction in workhours seems to been on the poorer side compared to what other countries see. Maybe more telling is that USA life expectency in 1945 was similar and worse than some countries occupied during ww2 such as Denmark and by 1970 USA seems to have fallen behind a lot of countries that was occupied during ww2 or was doing worse in 1945. https://ourworldindata.org/life-expectancy
To me it seems like in the so called golden age, if anything USA was falling behind, so I'm not sure how people can consider that a golden age, in fact it seems to have had many of the problem back than as it have today, which probably make a lot of sense to be honest, rather than the idea it went from exceptional good to exceptional bad compared to other developed countries, it more seems like it made less improvements overtime compared to those countries and was maybe not really even ahead in 1945.
To me it seems like in the so called golden age, if anything USA was falling behind, so I'm not sure how people can consider that a golden age, in fact it seems to have had many of the problem back than as it have today, which probably make a lot of sense to be honest, rather than the idea it went from exceptional good to exceptional bad compared to other developed countries, it more seems like it made less improvements overtime compared to those countries and was maybe not really even ahead in 1945.